Pump



Feb. 21, 1950 CLERC 2,498,029

' PUMP Filed Dec. 13, 1945 I 3 Sheets-Sheet 1 9A INVENTOR.

Fig. 1 LEONARD CLERC ATTORNEY Feb. 21, 1950 L. F.-CLERC 2,498,029

PUMP

Filed Dec. 13, 1945 3 Sheets-Sheet 3 Fly? F i 6 INVENTOR.

j LEONARD E CLERC ATTORNEY Patented Feb. 21, 1950 UNITED STATES PATENT OFFICE PUMP Leonard F. Clerc, Nutley, N. J.

Application December 13, 1945, Serial No. 634,745 a Claims. (Cl. 230152) This invention relates to pumps, and has particular reference to a rotary pump using reciprocating vanes.

An object of the invention is to generally improve rotary pumps and to provide a device of the character indicated. which is simple in construction, economical to manufacture, and highly eflicient in operation.

Another object of the invention is to provide a rotary pump with integral cooling elements constructed and arranged to effectively dissipate the heat generated during operation.

Another object of the invention is to provide a rotary pump which has cooling fins constructed and arranged with walls of outwardly increasing cross sectional areas.

Another object of the invention is to provide a device'of the character indicated, which is provided with reciprocating vanes and balanced cam means for positively moving the vanes.

A further object of the invention is .to provide a pump of-the character indicated, in which the vanes are positively held in predetermined position during the work cycle.

A further object of the invention is to provide a rotary pump which is constructed and arranged so that in operation, there is an impact action at the moment of intake on the leading side of the vanes followed by the creation of a vacuum immediately after on the trailing side of the vanes.

The foregoing and other objects and advantages of the invention will appear as the description proceeds, reference being made from time to time to the accompanying drawings forming part of the within disclosure, in which drawings:

Fig. 1- is a vertical section through a device embodying my invention taken substantially on the line l-l of Fig. 2.

Fig. 2 is a side elevational view of the device illustrated in Fig. 1, with one-half of the housing removed and showing the shaft in section.'

Fig. 3 is a section taken substantially on the l4 and I5.

during the operation of the pump 2 secured together by means of machine screws 9A, and in which are formed inlet and outlet passageways IllA and NB (Fig. 2).

Each of the plates 3 and I0 is provided with a plurality of radial fins l l which are cast integrally therewith, and which are formed with a comparatively thin cross sectional area at the point of attachment to the plates 9 and Ill; and a comparatively thick cross sectional area at their free ends, with the result that the heat generated is more easily dissipated.

The plates 9 and I have central openings and I3, adapted to accommodate bearings l4 and I5, in'which is'mounted for rotation a shaft 16.

Plates I1 and I8 are secured over the openings 12 and l 3 to prevent displacement of the bearings The plates I1 and I8 are secured to the housing members 9 and Ill by means of machine screws [9.

Keyed to the shaft It as at 20 is a rotor consisting of a comparatively thick center plate 2! and outer plates 22 and 23, which are secured together by means of counter-sunk machine screws 26, which engage suitable apertures 25 formed in the plates.

The rotor is provided with a plurality of radial slots 25, in which are adapted to reciprocate vanes 21. Each vane 21 has a transverse bore 28 adapted to accommodate shafts 29 on the ends of which are secured for rotation rollers 30. The rollers 30 are arranged to travel in cam slots 3| formed on the inside of each of the housing members 9 and I0 so that the vanes 21 are positively reciprocated in the slots 26.

In addition to the rollers 30 carried on the vanes 21, I provide a plurality of rollers 32 (Figs. 2 and 3) which serve as frictionless guides for the vanes 21. The rollers 32 are positioned on each side of the vanes 21. Each roller 32 has a peripheral groove 33 (Fig. 3) adapted to engage a longitudinal rib 34 formed on the vanes21. The rollers 32 are adapted to rest in recesses 35 formed in the plate 2|, and are secured in position by means of pins or shafts 36 which engage apertures 31 formed in the rotor plates 22 and 23.

It will be noted that the rollers 32 are in staggered relation to each other, one of the rollers being positioned near the front end of the vane slots 26 on the trailing side thereof as shown in Fig. 2.

As the rotor is moved in the direction shown by the arrow (Fig. 2), each-vane 21 receives a charge of fluid as it approaches the inlet passageway IIIA. At this moment, there is an impact action on the 3 leading side of the vane 21, which is followed immediately by the creation of a vacuum on the trailing side thereof as the vane 21 is advanced across the intake opening A.

The intake opening 10A is of such proportion that a vacuum may be formed simultaneously behind two vanes during their travel across the intake opening 10A. The fluid is carried ahead of each vane from the intake 10A to the outlet IOB, where it is discharged from the pump under a comparatively high pressure.

Inasmuch as the vanes 21 are positively moved in and out of the vane slots 26, I am able to mainnamed rollers, arranged to engage said bores.

tain a slight clearance between the ends of the It will be seen that the vanes 21 are further balanced on opposite sides by means of the rollers 30 traveling in the cam slots (Figs. 1 and 3).

Having described my invention, what I claim and desire to secure by Letters Patent is:

1. In a device 01 the character described, the combination of a housing comprising matched plates, fan shaped radial fins on each of said plates, a rotor in said housing, said rotor comprising an immediate plate and two face plates having radial vane slots therein, vanes in said slots, rollers on said vanes, and a cam slot in each of said housing plates adapted to engage said rollers, recesses in said intermediate plate and rollers in said recesses adapted to guide said vanes, said face plates being adapted to retain said last named rollers.

2. The combination defined in claim 1, including longitudinal ribs on said vanes adapted to engage peripheral grooves on said last-named rollers, and peripheral grooves on said rollers.

3. In a device of the character described, the combination of a housing comprising matched 4. A structure as defined in claim 3 in which the inlet and outlet each has an area approximately equivalent to the space between two adjacent vanes, and the outlet is positioned tangentially to the rotor.

5. The structure defined in claim 3 in which the outlet port is removed from the inlet port a distance substantially equivalent to the distance between the ends of a pair of adjacent vanes.

LEONARD F. CLERC.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS France July 11, 1938 

